Shock-absorber.



. E.H,KREIDER sHoewvnURE APPLICATION FILED OCT. Z2. T913.

1,155,738. I Patented Oct. 5,1915.,

l L l 'ATTOR Nev ENGS H. KREVIDER, OF LANCASTER, PENNSYLVANIA.

SHOCK-ABSORBER.

mames.

To all whom t may concern.'

Be it known that I, ENOS H. KREIDER,y a

citizen of the United States, residing at Lancaster, in thev county of Lancaster and State of Pennsylvania,have invented certain new and useful Improvements in Shock-Ab sorbers, of which the following is a specification, reference being had therein to the accompanying drawing;

rihis invention relates to shock absorbers of that class' employed on automobiles by which a gradually increasing resistance is interposed between the body of the car and therunning gear to compensate for the Mi movement of the springs in-either direction beyond a predetermined limit.

The object of the invention is to provide av device of this class which shall be simple, durable and eficient, and easily attached to ZG automobiles of the usual type.

Another object ofthe invention is to pro-l vide Aa shock-absorber thatwill allow the springs of the'vehicle to have a perfectly free movement vboth up. and down within certain limits before the device starts to act.

Still another object is toprovide a device thatwillbe equally effective for a downward movement of either the body or the running gearor an upward rebound; and further,

3 5 that when such movement approaches'the extremes the efficiency ofthe device will be greatly increased, and in an automatic manner.

A further Vobject of 4the invention is to 3,5 produce a friction shock-absorber that does not interfere with thev free action of the spring .at the time the road obstruction is encountered, but instantly retards the eX- cessive upward tendency of the body of the 31@ vehicle which is caused by the recoil of the springs. The same device prevents the sudden dropiof the body when the wheels enw counter a depression in the road.

A further object is to produce a shockl 5 absorber that automatically prevents the shock to the body of the vehicle by varying resistance and in proportion t0 the varying recoil pressure to which the body of the vehicle is subjected.

A further object is-to .produce a shockabsorber that prevents the sudden drop of the body of the vehicle when the wheels encounter a depression in the road by auto- `matically imparting an upward yieldin pressure to the body. Force ofv upwar l spemeatin of Letters Patent. Application led October 22, 1913. Serial No. 796,693.

4all held in frictional en Patented ct. 5. i911 5.

pressure4 is in proportion to the violence of the dropping tendency of the body of the nexedspecication and illustrated in the accompanying drawings, in which like figures of reference refer to corresponding parts in all of the views; but it is fully understood that While I have here described my inve11- tion as shown that I do not confine myself to the exact design, as slight changes may be made inthe construction and arrangement of the several parts without departing from the spirit of the invention.

In the drawings :-l+`igure l, is a side elevation of the device as applied to an automobile. F ig. 2, is an end view of the same. Fig. 3, is an enlarged detail side view with one-'half of the case removed. Fig. 1, is a longitudinal sectional view on the center Referring to the drawings The device comprises a ease divided longitudinally into two halves 10, and 1l, and having arms 12, and 13, integral therewith. lVithin said case are mounted two friction disks 14, and' bearing 19, having on each side thereof the;

squared portions 20, which are engaged by squared orifices in the disks lll, and 15, in such a manner that said disks are rigidly secured from turning on said sha-ft, while the disk 14, is secured by the pin 21, to the y bracket 22', by which the device is mounted -to the frame 23, of the vehicle, and in this manner both disks 1l, and A15, and the shaft remain .stationary While the case members can f reelyirotate upon the hubs 17, and 18.

Rotatably moun d upon the bearing 19, are a pair of circular. friction plates 24, whichare retained within the flanges 16, of the disks; while between said plates 24, is placed a plate 2 5, formed with ratchet teeth 26. Said disksplates and ratchet plate are agementby a. spring washer 52, and anut 2 threaded upon the outer end of the shaftfwhile the inner end of said Shaft is heid on the bracket 22, by a nut 28, threaded thereon. Said shaft is i supplied with an oil hole and cup 29.

Between the arms 12, and 13, at a point adjacent to the ratchet disk is a transverse pin 30, upon which is mounted a pawl 31,

,."formed with two arms 32; while between `said arms 32, is placed another pin 33,

formed with a V-shaped notch 34, in the side thereof, into which snaps a ball 35, which is held-in contact with said pin 33, by a spring 36, contained within said pawl 31. The A z outer ends of said arms 12, and 13, are held together by a screw 37, and are also prothereto by the screws 43. The rear ends of fsaid springs 42, are formed with an S-curve 44, adapted to engage the sides of a cam pin 45, secured inthe bolt 38, in such a manner that as the arms 12, and 13, are moved either upward or downwardby the action of the vehicle spring 46, the cam 45, will act upon one of the springs 42, to swing the pawl '31, on the pin 30, and bring one of its arms 32, into engagement with the ratchet teeth 26, on the plate 25,.and lock the same -so that itv moves with the arms 12, and 13, and rotates between the friction disks 24, when the frictional engagement will retard the free movement of the arms 12, and 13.

By referring to the Fig. 3, it will be seen that the arms have suliicient movement before the pawl is actuated, and the friction device employed, to give the vehicle springs iree action for small bumps, etc. It will also be noted that the ball lock 35, which rides easily over the sides-of the V-notch 34, tends to instantly bring the pawl 31, back to its-normal position.

For controlling the point where the pawl shall start to engage the ratchet, one end of the bolt 38, is squared as at 47, and has secured thereon by the nut 43, a lever 49, formed with a teat 50, for engagement with one of a series of notches 51, formed-in the link 39, so that the bolt may be moved to adjacent the position of the cam.

The frictionally held ratchet wheel within the casing, with the pawl ends engaging the same, when the arm of the casing is moved causing the wratchet wheel to rotate in either` direction imparts, during this time, a retarding effect to the body of the vehicle.

This constitutes a device operating on the springs of the vehicle which automatically causes the pawl points to engage the ratchet Wheel at'such times only when a retarding effect is desired. The same device operating the two springs, automatically causes the pawl points to disengage during a desired period of time, thus giving Yfree action ofthe springs while the wheel'of the vehicle is adjusting itself to an obstruction or a depression on the road, and instantly causes .the

pawl points to engage the ratchet at the mo springs, of `a bracket secured to said body,

a shaft secured to said bracket, a casing formed with an arm and mounted on said shaft, a ratchet Wheel rotatably mounted on said shaft. within said case, a pair of friction plates rotatably mountedon said shaft on each side ofsaid ratchet wheel, a second pair of friction plates embracing the first pair and rigidly secured upon said shaft.

and to lsaid bracket, a spring tension on the end of said shaft for Varying the frictional contact oi said plates, a pawl mounted in the arm of the casing and adapted to engage said ratchet when the arm is moved in either direction, a link pivotedto the end of-said arm and connected to the'running gear of the vehicle,l and means carried by the pivot of said arm and link to operate said vpawl t engage the ratchet wheel either above or below the center line thereof.

2. In a shock absorber of the class .de-V

scribed, the combination with a combined casing and arm, havingr a pair offriction disks mounted Within the casing, of a ratchet -Wheel mounted'within said casing in coaction with said disks, vspring actuated pawl points mounted Within the arm, said'paw-l points adapted Ato engage the ratchet wheel when the arm is moved upward or downward for a-predetermined distance. v

In testimony whereof I affix my signature in presence of two-witnesses.

, ENOS H. KREIDER. Witnesses: j

JOHN J. THOMPSON, MBEL L. Lnrnvm. 

